Dump gate



May 18 1926. I 1,585,120 J. B. SEAVERNS DUMP GATE Filed June 5,v 1922 45 MINI h MH IH Ill. 10

Patented May 18, 1926.

UNITED STATES JAMES B. SEAVERNS, OF CHICAGO, ILLINOIS.

DUMP GATE.

Application filed June 5,

The present invention relates to dump gates.

More particularly the present invention relates to the construction of gates applicable to bins for containing stone, coal, sand,

gravel, ashes or the like, an object of the present invention being to provide a gate construction in which a powerful leverage action may be obtained for operating said gates.

A further object is to provide dump gates which are sturdy in construction, efficient as closure members and which may be readily operated in a controlled manner to allow the passage of dumpable material at the desired rate.

Further objects will appear as the description proceeds.

Referring to the drawings-- Figure 1 is a view in side elevation of a bin having applied thereto dump gates embodying the principles of the present invention;

Figure 2 is a sectional view taken along the plane marked by the line 2-2 of Figure 1;

Figure 3 is an end elevation of salient features of the construction shown in Figure 1;

Figure 4 illustrates a slightly modified construction; and

Figure 5 is a sectional view taken on the plane marked by the line 5-5 of Figure 4.

The numeral 10 indicates a bin supported on uprights 10'10', said bin having the hopper 11. The lower extremity of the hopper may be provided with a chute 12 through which dumpable material may pass downwardly from the bin 10.. The bottom of the chute 12 is provided with a pair of pivoted gates 13 and 14, which may be of the type commonly known as clam shell, said gates being capable of pivotal motion about the axes 15-15, which axes may lie in substantially parallel lines. When said gates 13 and 14 are moved into proximity to one another, they 'form a closure for the bottom of the chute 12 and when said gates are moved apart they provide between them a space through which the dumpable material may pass, the gates 13 and 14 being movable approximately to the dotted line positions 13 and 14, respectively.

The gates .13 and 14 are adapted to be moved in unison and have common controlling means, said controlling means consist- 1922. Serial No. 566,004.

7 ingot a pair of operating arms 16 and 17 substantially symmetrically placed relative to said gates, of which the operating arm 16 has pivotal connection with the gate 13 and operating arm 17 has pivotal connectio n with gate 14. Operating arm 16 is connectedto gate 13 at the points 16, while operating arm 17 is connected to gate 14 at the point 17, said points 16 and 17 being located near to adjacent edges of gates 13 and 14. Said operating arms 16 and 17 also connect with the operating lever 18 which is pivoted at the point 19, said point 19 being preferably located intermediate of the arms 16 and 17. The lever 18 may be mounted upon a bracket 20, which may be supported upon any convenient structure, as, for instance, upon the uprights 10'-10, and is provided with a handle 21, by means of which a strong leverage action may be applied to the operating arms 16 and 17 for the purpose of operating the gates 13 and 14 As will be noted from the drawings, and 3 particularly Figures 1 and 4, the two opposite bottom edges of the chute 12 are curved and the dumping gates 13 and 14 have bottoms conforming to said curved lower edges. As indicated particularly in Figure 1, the abutting edges of the gates. 13 and 14 follow the bottom edges of the chute 12 in their opening and closing movements. By reason of this construction, the dumpable material is easily controllable so that the flow through said chute 12 may be controlled to a nicety.

According to the structure illustrated in Figures 4 and 5, the gate 14 is provided with an operating arm 22 having pivotal connection therewith at the point 22, substantially midway of the length of said gate, while the gate 13 is provided with the bifurcated operating arm 23 having the two bifurcations 2424, which have pivotal connection with the gate 13 at the points 24-24', located at the opposite ends of said gate 13. Points 22 and 2424 should be located adjacent to the meeting edges of gates 13 and 14. The arms 22 and 23 have a pivotal connection with the lever 25, which may be pivotally mounted on the bracket 26, the point 27 of pivotal connection of said lever 25 being placed intermediate of the connections between lever 25 and operating arms 22 and 23. The lever 25 may be provided with a handle 28 whereby said lever and consequently the arms 22 and 23 and gates 13 and 1% may be effectively operated.

By reason of the fact that the operatin arms for the gates 13 and 14 are connectec to said gates at points adjacent to their meeting edges, the forces are applied at the proper points to best overcome the resistance of the dumpable material. Due to the weight of said material, control of bottom doors is often ditiicult and distortion of such doors sometimes results. According to the construction of the present invention, however, a inininnim of distortion is produced and the door may be eltectually cont-rolled.

Two embodiments of the present invention have been described in detail. Many modification will occur to those skilled in the art. It is intended in this patent to cover all such modifications that fall Within the scope of the invention as defined by the appended claim.

I claim: I

In a hopper, in combination, a pair of pivotally mounted dump gates, said gates having abutting edges, a bifurcated arm connected with one of said dump gates close to its edge and a second arm connected to the other of said gates close to its edge and synin'ietrically disposed relative to the length of said other gate, and a common lever for operating said arms, said lever having a pivotal mounting between said arms.

Signed at Chi ago, Illinois, this 2nd day of June, 1922.

JAMES B. SEIUTIRN 

